Boeing Starliner capsule carrying Sunita Williams to now take off on May 17

Nasa announced the postponement of Boeing's Starliner spacecraft's crewed launch to May 17 due to a faulty rocket valve. The delay adds pressure amid years of setbacks and Boeing's aviation safety crisis. Astronauts Wilmore and Williams were prepared for liftoff when a valve issue led to the scrub. SpaceX's success with Dragon underscores Nasa's reliance on Starliner.